Data transmission

ABSTRACT

Methods, apparatuses, and systems for data transmission are described. A sending terminal sends data and a data identification of the data to a server. The data identification is broadcasted to one or more receiving terminals through a short distance wireless communication. The receiving terminal obtains the data from the server according to the data identification. When the sending terminal needs to transmit data to multiple receiving terminals, the techniques of the present disclosure do not require the sending terminal to establish a point-to-point connection with each of the receiving terminal. Thus, the techniques of the present disclosure effectively reduce transmission time with multiple receiving terminals, improve data transmission efficiency, and lower power consumption at the sending terminal.

CROSS-REFERENCE TO RELATED PATENT APPLICATIONS

This application claims foreign priority to Chinese Patent ApplicationNo. 201410171551.4 filed on Apr. 25, 2014 entitled “Data TransmissionMethod, Apparatus, and System,” which is hereby incorporated byreference in its entirety.

TECHNICAL FIELD

The present disclosure generally relates to the field of computertechnology, and, more particularly, to a data transmission method,apparatus, and system.

BACKGROUND

With the development of communication technology, short distancewireless communication technology has been widely used in our dailylives and work for conducting wireless information transmission betweenmobile phones, personal digital assistants (PDAs), wireless earphones,laptops, etc. Bluetooth is a typical short distance wirelesscommunication technology.

Under the existing techniques, a data transmission method via Bluetoothis as follows. A sending terminal and a receiving terminal establish apoint-to-point connection via Bluetooth and then conduct datatransmission through the point-to-point connection.

The existing techniques have the following shortcomings. When thesending terminal and the receiving terminal establish the point-to-pointconnection, the sending terminal can only establish the point-to-pointconnection with one receiving terminal. Thus, one sending terminal canonly transmit data to one receiving terminal at a particular time. Whenthe sending terminal needs to transmit data to multiple receivingterminals, the sending terminal has to establish a connection with eachreceiving terminal via Bluetooth in turn.

For example, the sending terminal needs to send a string X to receivingterminals 1, 2, and 3. The detailed operations may be as follows. Atfirst, the sending terminal establishes a point-to-point connection withthe receiving terminal 1 via Bluetooth. Based on the point-to-pointconnection, the sending terminal sends the string X to the receivingterminal 1. After transmitting with the receiving terminal 1 iscompleted, the sending terminal disconnects the point-to-pointconnection with the receiving terminal 1. Then, the sending terminalestablishes a point-to-point connection with the receiving terminal 2via Bluetooth. Based on the point-to-point connection, the sendingterminal sends the string X to the receiving terminal 2. Aftertransmitting with the receiving terminal 2 is completed, the sendingterminal disconnects the point-to-point connection with the receivingterminal 2. Finally, the sending terminal establishes a point-to-pointconnection with the receiving terminal 3 via Bluetooth. Based on thepoint-to-point connection, the sending terminal sends the string X tothe receiving terminal 3.

As shown above, when the sending terminal needs to transmit data tomultiple receiving terminals, the sending terminal needs to establish aconnection with each receiving terminal via Bluetooth and transmit datawith each receiving terminal one by one, thereby causing low datatransmission efficiency and high power consumption at the sendingterminal.

Therefore, new data transmission techniques are required to solve thelow data transmission efficiency and high power consumption at thesending terminal caused by the existing technique that the sendingterminal may only transmit data with one receiving terminal at the sametime.

SUMMARY

This Summary is provided to introduce a selection of concepts in asimplified form that are further described below in the DetailedDescription. This Summary is not intended to identify all key featuresor essential features of the claimed subject matter, nor is it intendedto be used alone as an aid in determining the scope of the claimedsubject matter. The term “techniques,” for instance, may refer toapparatus(s), system(s), method(s) and/or computer-readable instructionsas permitted by the context above and throughout the present disclosure.

The present disclosure provides data transmission techniques thatresolve the technical problem that one sending terminal only transmitsdata with one receiving terminal at the same time under the existingtechniques. The technical problem causes low data transmissionefficiency and high power consumption at a sending terminal.

An embodiment of the present disclosure provides an example datatransmission method. Data and a data identification of the data areuploaded to a server. The data identification is broadcasted to one ormore receiving terminals through a short distance wireless communicationincluding a short distance communication protocol.

Another embodiment of the present disclosure provides another exampledata transmission method. A data identification broadcasted by a sendingterminal is received through a short distance wireless communicationincluding a short distance communication protocol. The dataidentification is sent to a server. Data corresponding to the dataidentification returned by the server is received.

Another embodiment of the present disclosure provides another exampledata transmission method. Data and a data identification of the datauploaded by a sending terminal are received. The data identificationsent by a receiving terminal is received. A sending terminal broadcaststhe data identification to one or more receiving terminals through ashort distance wireless communication including a short distancecommunication protocol. The sending terminal also sends the datacorresponding to the data identification to the receiving terminal.

Another embodiment of the present disclosure provides an example datatransmission system that includes a sending terminal, one or morereceiving terminals, and a server. The sending terminal uploads data anda data identification of the data to a server and broadcasts the dataidentification to one or more receiving terminals through a shortdistance wireless communication including a short distance communicationprotocol. A respective receiving terminal receives the dataidentification broadcasted by the sending terminal, sends the dataidentification to the server, and receives the data corresponding to thedata identification returned by the server. The server receives the dataand the corresponding data identification uploaded by the sendingterminal, receives the data identification sent by the respectivereceiving terminal, and sends the data corresponding to the dataidentification to the respective receiving terminal.

Another embodiment of the present disclosure provides an example datatransmission apparatus including an uploading module and a broadcastingmodule. The uploading module transmits data and a data identification ofthe data to a server. The broadcasting module broadcasts the dataidentification to one or more receiving terminals through a shortdistance wireless communication including a short distance communicationprotocol.

Another embodiment of the present disclosure provides another exampledata transmission apparatus including a first receiving module, asending module, and a second receiving module. The first receivingmodule receives a data identification broadcasted by a sending terminalthrough a short distance wireless communication including a shortdistance communication protocol. The sending module sends the dataidentification to the server. The second receiving module receives datacorresponding to the data identification returned by the server.

Another embodiment of the present disclosure provides another exampledata transmission apparatus including a first receiving module, a secondreceiving module, and a sending module. The first receiving modulereceives data and a data identification of the data uploaded by asending terminal. The second receiving module receives the dataidentification sent by a receiving terminal. The sending terminalbroadcasts the data identification to one or more receiving terminalsthrough a short distance wireless communication including a shortdistance communication protocol. The sending module sends the datacorresponding to the data identification to the receiving terminal.

Under the present techniques, a sending terminal sends data and a dataidentification corresponding to the data to a server and broadcasts thedata identification to one or more receiving terminals through a shortdistance wireless communication including a short distance communicationprotocol. After receiving the data identification broadcasted by thesending terminal through the short distance wireless communication, areceiving terminal obtains the data corresponding to the dataidentification from the server according to the data identification.According to the present techniques, when the sending terminal transmitsthe data to multiple receiving terminals, it is not necessary for thesending terminal to establish a point-to-point connection with eachreceiving terminal and transmit data one by one. Thus, the techniques ofthe present disclosure effectively reduce data transmission time to themultiple receiving terminals, improve data transmission efficiency, andreduce power consumption at the sending terminal.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying FIGs illustrate the present disclosure and become partof the present disclosure. The example embodiments of the presentdisclosure and their descriptions are used to illustrate the presentdisclosure, and shall not be construed to unduly limit the presentdisclosure.

FIG. 1 is a flow chart illustrating an example data transmission methodof a sending terminal according to an example embodiment of the presentdisclosure.

FIG. 2 is a flow chart illustrating an example data transmission methodof a receiving terminal according to an example embodiment of thepresent disclosure.

FIG. 3 is a flow chart illustrating an example data transmission methodof a server according to an example embodiment of the presentdisclosure.

FIG. 4 is a flow chart illustrating an example detailed datatransmission method of a server according to an example embodiment ofthe present disclosure.

FIG. 5 is a flow chart illustrating an example data transmission methodaccording to an example embodiment of the present disclosure.

FIG. 6 is a diagram illustrating an example data transmission systemaccording to an example embodiment of the present disclosure.

FIG. 7 is a diagram illustrating an example sending terminal for datatransmission according to an example embodiment of the presentdisclosure.

FIG. 8 is a diagram illustrating an example receiving terminal for datatransmission according to an example embodiment of the presentdisclosure.

FIG. 9 is a diagram illustrating an example server for data transmissionaccording to an example embodiment of the present disclosure.

DETAILED DESCRIPTION

Under the present techniques, a sending terminal sends data and a dataidentification corresponding to the data to a server and broadcasts thedata identification to one or more receiving terminals through a shortdistance wireless communication including a short distance communicationprotocol. After receiving the data identification broadcasted by thesending terminal through the short distance wireless communication, areceiving terminal obtains the data corresponding to the dataidentification from the server according to the data identification.According to the present techniques, when the sending terminal transmitsthe data to multiple receiving terminals, it is not necessary for thesending terminal to establish a point-to-point connection with eachreceiving terminal and transmit data one by one. Thus, the techniques ofthe present disclosure improve data transmission efficiency and reducepower consumption at the sending terminal.

To clearly illustrate the purpose, technical solutions, and technicaladvantage of the present disclosure, the techniques of the presentdisclosure are described by the example embodiments of the presentdisclosure and their corresponding FIGS. The described exampleembodiments herein are only a portion of the embodiments of the presentdisclosure, and are not all of the embodiments of the presentdisclosure. The other embodiments obtained by one of ordinary skill inthe art without using creative efforts fall under the protection of thepresent disclosure.

FIG. 1 is a flow chart illustrating an example data transmission methodof a sending terminal according to an example embodiment of the presentdisclosure.

At 102, data and a data identification corresponding to the data areuploaded to a server.

For example, the sending terminal may use a wired transmission methodsuch as a cable or a data line to transmit the data to be sent to areceiving terminal and the data identification corresponding to the datato the server. Alternatively, the sending terminal may use a wirelesscommunication method such as WiFi to transmit the data to be sent to areceiving terminal and the data identification corresponding to the datato the server. The data identification identifies the data uploaded fromthe sending terminal to the server.

For example, a sending terminal A needs to send a picture aaa to areceiving terminal 1, a receiving terminal 2, and a receiving terminal3. The sending terminal A may firstly generate a data identification xyzcorresponding to the picture aaa and sends the picture aaa and the dataidentification xyz corresponding to the picture aaa to a server Cthrough WiFi.

At 104, the data identification is broadcasted to one or more receivingterminals through a short distance wireless communication including ashort distance communication protocol so that a respective receivingterminal obtains the data from the server according to the dataidentification.

For example, the short distance wireless communication may include, butis not limited to, Bluetooth communication, Infrared communication,Zigbee communication and their corresponding protocols. A number of thereceiving terminals is at least one.

For example, at 104, when the sending terminal broadcasts the dataidentification to one or more receiving terminals through the shortdistance wireless communication, all of the receiving terminals receivethe data identification broadcasted by the sending terminal within abroadcast coverage range of the short distance wireless communication.At 102, the sending terminal transmits the data and its correspondingdata identification to the server for one time. A receiving terminalthat receives the data identification broadcasted by the sendingterminal receives the data from the server. Thus, the techniques of thepresent disclosure achieve the purpose that one sending terminal sendsthe data to multiple receiving terminals at the same time.

Following the previous example, the sending terminal A may broadcast thedata identification xyz to the receiving terminal 1, the receivingterminal 2, and the receiving terminal 3 through Bluetooth broadcast.The data identification xyz corresponding to the picture aaa. Then, thereceiving terminal 1, the receiving terminal 2, and the receivingterminal 3 send the data identification xyz to the server. The server Csearches for the corresponding picture aaa according to the dataidentification syz and sends the picture aaa to the receiving terminal1, the receiving terminal 2, and the receiving terminal 3.

As shown above, the sending terminal A uploads the picture aaa and itscorresponding data identification xyz to the server C for one time andbroadcasts the data identification xyz to the receiving terminal 1, thereceiving terminal 2, and the receiving terminal 3 through Bluetoothbroadcast. After receiving the data identification xyz broadcasted bythe sending terminal, the receiving terminal 1, the receiving terminal2, and the receiving terminal 3 obtain the picture aaa corresponding tothe data identification xyz from the server. Thus, the techniques of thepresent disclosure achieve the purpose that one sending terminal sendsthe data to multiple receiving terminals at the same time. Compared withexisting techniques, it is not necessary for the sending terminal A toestablish a communication with each of the receiving terminal 1, thereceiving terminal 2, and the receiving terminal 3 and transmit thepicture aaa one receiving terminal by another receiving terminal. Thetechniques of the present disclosure effectively reduce datatransmission time to the multiple receiving terminals, improve datatransmission efficiency, and reduce power consumption at the sendingterminal.

In addition, under existing techniques, when the sending terminal Atransmits the data to the receiving terminal 1, the receiving terminal2, and the receiving terminal 3, the search terminal firstly needs tosearch Bluetooth connection signals broadcasted by the receivingterminal 1, the receiving terminal 2, and the receiving terminal 3, andestablishes a Bluetooth communication with each of the receivingterminals one by one based on the found Bluetooth connection signals.Thus, efficiency that the sending terminal A sends the picture aaa toeach of the receiving terminals is low. Furthermore, as the sendingterminal A also needs to broadcast its Bluetooth connection signal sothat the receiving terminal 1, the receiving terminal 2, and thereceiving terminal 3 establish Bluetooth connections with the sendingterminal A according to the Bluetooth connection signal broadcasted bythe sending terminal A. Thus, when an irrelevant device requests toestablish a Bluetooth connection with the sending terminal A, it causesinconvenience or hassle to a user of the sending terminal A.

In contrast, under the techniques of the present disclosure, when thesending terminal A needs to transmit data with the receiving terminal 1,the receiving terminal 2, and the receiving terminal 3, it is notnecessary for the sending terminal A to search for the Bluetoothconnection signals of the receiving terminal 1, the receiving terminal2, and the receiving terminal 3. Thus, efficiency of transmitting thepicture aaa is improved. Furthermore, it is not necessary for thesending terminal A to broadcast its Bluetooth connection signals. Thetechniques of the present disclosure prevent an irrelevant device fromestablishing the Bluetooth connection with the sending terminal A,thereby avoiding the inconvenience or hassle to the user of the sendingterminal A.

For example, the data identification may be a character string includingmultiple fields. Each field is generated according to a preset rule. Forinstance, the generated data identification is a character string with16 bytes and includes three fields. A first field includes a first byte.A second field includes a second byte and a third byte. A third fieldincludes fourth to sixteenth bytes. Each field may be generatedaccording to a rule as shown in Table 1 below.

TABLE 1 First Byte Second-Third Bytes Fourth-Sixteenth Bytes Shortdistance Random number within a Time length from a communication presetnumerical range previous particular time to method current timecalculated identification based on a preset time unit

In Table 1, assuming that short distance communication methods includeBluetooth communication, Infrared communication, Zigbee communicationand their corresponding protocols. A short distance communication methodidentification for Bluetooth is set as 1, a short distance communicationmethod identification for Infrared is set as 2, and a short distancecommunication method identification for Zigbee is set as 3. If Bluetoothis used as the short distance communication method, the first byte is 1.Assuming that a preset numerical range is between 10 and 99, the secondand the third bytes include a random number between 10 and 99. Assumingthat the previous particular time is Jan. 1, 1970 and the preset timeunit is millisecond, the fourth byte to the sixteen byte are a number ofmilliseconds from Jan. 1, 1970 to current time when the dataidentification is generated.

In a practical implementation, if there are multiple sending terminals,there is a possibility that some sending terminals generate the dataidentification at the same time. As the third field as shown in Table 1is a time length from a previous particular time to current timecalculated based on a preset time unit, if different dataidentifications corresponding to different data are generated at thesame time, third fields of these data identifications are the same. Ifthe same short distance communication method is accepted for generatingtwo data identifiers and the random numbers in the second fields of thetwo data identifiers happen to the same, the generated dataidentifications would be the same too. Thus, based on the dataidentification as shown in Table 1, it is possible that different datamay correspond to the same data identification. When different datacorresponding to the same data identification are uploaded to theserver, these data would overwrite each other and thus the receivingterminal may not accurately obtain the corresponding data according tothe data identification.

For example, a sending terminal A generates a data identification A2corresponding to data A1 at time t. A sending terminal B generates adata identification B2 corresponding to data B1 at the same time t. Asthe third field as shown in Table 1 is a time length from a previousparticular time to current time calculated based on a preset time unit,the data identification A2 and the data identification B2 have the samethird field. As the sending terminal A and the sending terminal B usethe same short distance communication method, they have the same firstfield. If the random number of the second fields of the dataidentification A2 and the data identification B2 are the same, the dataidentification A2 is the same as the data identification B2.Accordingly, after receiving the data A1 and its corresponding dataidentification A2 uploaded by the sending terminal A and the data B1 andits corresponding data identification B2 uploaded by the sendingterminal B, the server uses the data A1 to overwrite the data B1 or usesthe data B1 to overwrite the data B1.

Generally, later received data is used to overwrite previously receiveddata. For example, the server firstly receives the data A1 and itscorresponding data identification A2 uploaded by the sending terminal Aand late receives the data B1 and its corresponding data identificationB2 uploaded by the sending terminal B. As A2 and B2 are the same, theserver uses the data B1 to overwrite the data A1. When the server sendsdata corresponding to the data identification A2 to the receivingterminal, the server sends the data B1 instead of A1 to the receivingterminal. That is, the data A1 is lost.

To avoid the above problem and ensure reliable data transmission, forexample, the data identification, in addition to the three fields asshown in Table 1, may also include a unique device identification of thesending terminal such as an Internet Protocol (IP) address, a mediaaccess control (MAC) address, a device number (e.g. International MobileStation Equipment Identity or IMEI), etc. When the first three bytes ofthe data identification send by the sending terminals are the same, theunique device identification causes each data identification unique.Therefore, when the receiving terminal obtains corresponding data fromthe server according to the data identification, the receiving terminalreceives the correct data, thereby ensuring reliable data transmission.

For example, a corresponding relationship between the data and the dataidentification may be established by the sending terminal. For instance,when the sending terminal needs to send the data to the receivingterminal, the sending terminal firstly generates the dataidentification, establishes the corresponding relationship between thedata and the data identification through a relationship mapping table,and then sends the data, the data identification, and the relationshipmapping table to the server.

For another example, a corresponding relationship between the data andthe data identification may be established by the server. For instance,when the sending terminal needs to send the data to the receivingterminal, the sending terminal firstly generates the dataidentification, encapsulates the data and the data identification into adata packet, and uploads the data packet to the server. After receivingthe data packet, the server establishes the corresponding relationshipbetween the data and data identification in the data packet.

For example, at 104, when the sending terminal broadcasts the dataidentification to one or more receiving terminals through the shortdistance wireless communication, the sending terminal broadcasts thedata identification to the one or more receiving terminals according toa preset frequency within a preset time period. For instance, thebroadcast may be once per 2 seconds in 10 seconds. That is, the sendingterminal broadcasts 5 times in 10 seconds. Thus, the techniques of thepresent disclosure avoid continuous broadcasting in a long time, savepower consumption at the sending terminal and the receiving terminal,and facilitate the specific receiving terminal to receive the dataidentification broadcasted by the sending terminal.

Based on the process that the sending terminal uploads the data to theserver and broadcasts the data identification to one or more receivingterminals as shown in FIG. 1, correspondingly, a process that areceiving terminal receives the data uploaded by the sending terminal tothe server is shown in FIG. 2.

FIG. 2 is a flow chart illustrating an example data transmission methodof a receiving terminal according to an example embodiment of thepresent disclosure.

At 202, a data identification broadcasted by a sending terminal isreceived through a short distance wireless communication including acorresponding short distance wireless communication protocol.

For example, the receiving terminal does not establish a point-to-pointconnection with the sending terminal. Instead, the receiving terminalreceives the data identification broadcasted by the sending terminalthrough the short distance wireless communication. For example, a numberof the receiving terminals may be at least one.

For example, the short distance wireless communication may include, butis not limited to, Bluetooth communication, Infrared communication,Zigbee communication and their corresponding protocols.

For example, when the sending terminal A needs to send the picture aaato the receiving terminal 1, the receiving terminal 2, and the receivingterminal 3, the sending A broadcasts the data identification xyz to thereceiving terminal 1, the receiving terminal 2, and the receivingterminal 3 through Bluetooth broadcast.

The data identification may be a character string including multiplefields. Details of the data identification may refer to correspondingdescription at 102 in FIG. 1, and thus are not detailed herein.

At 204, the data identification is sent to a server.

After the receiving terminal receives the data identificationbroadcasted by the sending terminal through short distance wirelesscommunication, the sending terminal may automatically send the data tothe server to obtain the data corresponding to the data identification.Alternatively, after receiving an instruction from a user to send thedata identification to the server, the receiving terminal sends the dataidentification to the server to obtain the data corresponding to thedata identification.

Following the previous example, after the receiving terminal 1, thereceiving terminal 2, and the receiving terminal 3 receive the dataidentification sent by the sending terminal A through Bluetoothbroadcast, they may automatically send the data identification xyz tothe server C. Alternatively, after receiving the data identification xyzsent by the sending terminal A through Bluetooth broadcast, thereceiving terminal 1, the receiving terminal 2, and the receivingterminal 3 may prompt a message at their corresponding user interface torequest the user whether to send the data identification xyz to theserver C. After receiving an instruction from the user to send the dataidentification xyz to the server C, the receiving terminal 2, and thereceiving terminal 3 send the data identification xyz to the server C toobtain the data corresponding to the data identification.

At 206, data corresponding to the data identification returned by theserver is received.

For example, after the receiving terminal sends the received dataidentification to the server, the server searches for the datacorresponding to the data identification according to a correspondingrelationship between the data and the data identification and sends thefound data corresponding to the data identification to the receivingterminal.

Following the previous example, after receiving the data identificationxyz sent by the receiving terminal 1, the receiving terminal 2, and thereceiving terminal 3, the server C searches for the picture aaaaccording to the corresponding relationship between the dataidentification xyz and the picture aaa and returns the found picture aaato the receiving terminal 1, the receiving terminal 2, and the receivingterminal 3.

FIG. 3 is a flow chart illustrating an example data transmission methodof a server according to an example embodiment of the presentdisclosure.

At 302, data and a data identification corresponding to the datauploaded by a sending terminal are received.

For example, the server may receive the data and its corresponding dataidentification uploaded by the sending terminal through wiredcommunications such as cable or data line or wireless communicationssuch as WiFi. The data identification identifies the data uploaded fromthe sending terminal to the server.

For example, when the sending terminal A needs to send the picture aaato the receiving terminal 1, the receiving terminal 2, and the receivingterminal 3, the server C may receive the picture aaa and itscorresponding data identification xyz uploaded by the sending terminal Athrough WiFi.

The data identification may be a character string including multiplefields. Details of the data identification may refer to correspondingdescription at 102 in FIG. 1, and thus are not detailed herein.

At 304, the data identification sent by a receiving terminal isreceived.

The data identification is received by the receiving terminal from thesending terminal through short distance wireless communication. A numberof the receiving terminals may be at least one.

Following the previous example, the server C receives the dataidentification xyz sent by the receiving terminal 1, the receivingterminal 2, and the receiving terminal 3 through WiFi. The dataidentification xyz is sent by the sending terminal A to the receivingterminal 1, the receiving terminal 2, and the receiving terminal 3through Bluetooth broadcast.

At 306, data corresponding to the data identification is sent to thereceiving terminal.

For example, after receiving the data identification, the receivingterminal searches for the data corresponding to the data identificationaccording to a corresponding relationship between the data and the dataidentification, and returns the data to the receiving terminal.

Following the previous example, after receiving the data identificationsent by the receiving terminal 1, the receiving terminal 2, and thereceiving terminal 3, the server C searches for the picture aaaaccording to the corresponding relationship between the dataidentification xyz and the picture aaa, and sends the found picture aaato the receiving terminal 1, the receiving terminal 2, and the receivingterminal 3.

In an example implementation, a user may need to know other surroundingusers. To satisfy such user requirement, the sending terminal may send auser identification of the sending terminal as data to the server, andbroadcasts a data identification corresponding to the useridentification of the sending terminal through short distance wirelesscommunication. A receiving terminal obtains the user identification ofthe sending terminal from the server according to the received dataidentification so that a user of the receiving terminal is aware of anexistence of the user that uses the sending terminal. For example, at102 in FIG. 1, the operation that the sending terminal uploads the datato the server may further include the following operation. The useridentification of the sending terminal is obtained and then uploaded asthe data to the server. Correspondingly, at 302 in FIG. 3, the operationthat the server receives the data uploaded by the sending terminal mayfurther include the following operation. The user identification of thesending terminal uploaded by the sending terminal is received.Correspondingly, the example method as shown in FIG. 2 may furtherinclude the following operation. When the data received by the receivingterminal is the user identification of the sending terminal, userinformation corresponding to the user identification of the sendingterminal is obtained according to the user identification of the sendingterminal. For example, the receiving terminal may obtain thecorresponding information from the server or a third party deviceaccording to the user identification of the sending terminal.

Further, by reference to the example method for obtaining the datacorresponding to the data identification by the receiving terminal fromthe server as shown in FIG. 2, if the data obtained by the receivingterminal from the server is general data such as a picture, no furtheroperation needs to be performed. If the data obtained by the receivingterminal from the server is the user identification of the sendingterminal, the corresponding user information is obtained from the serveror the third party device according to the user identification of thesending terminal. Thus, the receiving terminal needs to identify whetherthe obtained data from the server is general data such as pictures orthe user identification of the sending terminal.

In order to identify whether the obtained data is the general data orthe user identification of the sending terminal, two functions may bepreset in the sending terminal. One is general data transmissionfunction and the other is neighboring user finding function. Whencertain data is uploaded to the server by using the neighboring userfinding function, the sending terminal sets a preset label with the dataand uploads the data with the preset label to the server. When data isuploaded to the server by using the general data transmission function,the sending terminal does not set a label for the data and directlyuploads the data to the server. When the receiving terminal receives thedata from the server, the receiving terminal identifies whether the datahas the label. If the data is identified with the label, the data isdetermined as the user identification of the sending terminal and thecorresponding user information is obtained from the server or the thirdparty device according to the user identification of the sendingterminal. If the data is not identified with the label, the data isdetermined as general data and no further operation needs to beperformed.

Accordingly, when the user of the sending terminal intends to bediscovered by a neighboring user, the user of the sending terminal mayuse the neighboring user finding function at the sending terminal toupload the user identification of the sending terminal to the server.For example, the sending terminal sets a label corresponding to the useridentification of the sending terminal and then sends the useridentification of the sending terminal that sets the label and thecorresponding data identification to the server. After the receivingterminal receives the user identification of the sending terminal fromthe server, the receiving terminal identifies that the obtained data(i.e., the user identification of the sending terminal) includes thelabel and thus determines that the data is the user identification ofthe sending terminal. The receiving terminal further obtains thecorresponding user information from the server or the third party deviceaccording to the user identification of the sending terminal.

The user identification of the sending terminal may be input by the userinto the sending terminal or pre-stored at the sending terminal. Theuser identification of the sending terminal may include, but is notlimited to, a nickname or a user name of the user of the sendingterminal.

For example, when the user of the sending terminal A needs to bediscovered by the neighboring user, the neighboring user findingfunction at the sending terminal may be used to upload the useridentification of the sending terminal to the server. For instance, thesending terminal A retrieves the user identification of the sendingterminal that is pre-stored at the sending terminal, and sets the labelfor the user identification of the sending terminal. Then the sendingterminal A uploads the user identification of the sending terminal withthe label to the server C. After receiving corresponding data from theserver C, the receiving terminal B identifies that the obtained data(i.e., the user identification of the sending terminal) has the labeland thus determines that the data is the user identification of thesending terminal. The receiving terminal B further automaticallyretrieves the user information corresponding to the user identificationof the sending terminal from the server C or a third party deviceaccording to the user identification of the sending terminal.Alternatively, the receiving terminal B may wait until receiving aninstruction from a user and then retrieve the user informationcorresponding to the user identification of the sending terminal fromthe server C or a third party device according to the useridentification of the sending terminal. For instance, the retrieved userinformation may include: John, Male, 30 years old. Through the abovedescribed method, the user of the receiving terminal B discovers theuser of the receiving terminal A.

Based on the methods described in FIGS. 1-3, the sending terminaluploads the data and the data identification corresponding to the datato the server, and broadcasts the data identification through shortdistance wireless communication. Within the broadcast coverage range,each receiving terminal receives the data identification. The receivingterminal that receives the data identification obtains the correspondingdata from the server according to the data identification. Thus, throughthe above described methods, the sending terminal may not only send thedata to a designated receiving terminal within the broadcast coveragerange. The described methods in FIGS. 1-3 may not guarantee privacy ofdata transmission. To ensure that a receiving terminal that receives thedata may be designated and guarantee the privacy of data transmission,the present disclosure also provides another example data transmissionmethod as shown in FIG. 4.

At 402, data, a data identification corresponding to the data, a useridentification of a receiving terminal that is allowed to receive thedata, which are uploaded by a sending terminal, are received.

To ensure privacy of data transmission, the sending terminal maydesignate a user identification of a receiving terminal that is allowedto receive the data and send the user identification of the designatedreceiving terminal to a server.

For example, when the sending terminal A needs to send the picture aaato the receiving terminal 1, assuming that a user identification of thereceiving terminal 1 is bbb, the sending terminal A may designate thatthe user identification of the receiving terminal that is allowed toreceive the picture is bbb. For instance, the sending A firstlygenerates a data identification xyz corresponding to the picture aaa,and then sends the picture aaa, the data identification xyzcorresponding to the picture aaa, and the user identification bbb of thedesignated receiving terminal that is allowed to received the picture tothe server C through WiFi. Correspondingly, in addition to receiving thepicture aaa and its corresponding data identification xyz uploaded bythe sending terminal A, the server C also receives the useridentification bbb of the designated receiving terminal that is allowedto received the picture, which is uploaded by the sending terminal A.

At 404, the data identification and the user identification of thereceiving terminal sent by the receiving terminal are received.

The user identification of the receiving terminal may be pre-stored inthe receiving terminal or manually input into the receiving terminal bythe user of the receiving terminal.

Following the previous example, each of the receiving terminal 1, thereceiving terminal 2, and the receiving terminal 3 receives the dataidentification xyz broadcasted by the sending terminal A. The receivingterminal 1 automatically sends the data identification xyz and the useridentification bbb of the receiving terminal 1 to the server C. Thereceiving terminal 2 automatically sends the data identification xyz andthe user identification ccc of the receiving terminal 2 to the server C.The receiving terminal 3 automatically sends the data identification xyzand the user identification ddd of receiving terminal 3 to the server C.Correspondingly, the server C receives the data identification xyz andthe user identification of the receiving terminals, i.e., bbb, ccc, andddd respectively.

At 406, the user identification of the receiving terminal, which is sentby the receiving terminal, is determined whether to be the same as theuser identification of the receiving terminal that is allowed to receivedata, which is uploaded by the sending terminal. If they are the same,operations at 408 are performed. Otherwise, operations at 410 areperformed.

At 408, the data corresponding to the data identification is sent to thereceiving terminal.

At 410, the data corresponding to the data identification is rejected tobe sent to the receiving terminal.

Following the previous example, according to the user identification bbbof the receiving terminal, uploaded by the sending terminal A, which isallowed to receive the picture aaa, the server C matches it with theuser identifications bbb, ccc, ddd that are respectively sent by thereceiving terminal 1, the receiving terminal 2, and the receivingterminal 3. A matching result is that the user identification of thereceiving terminal 1 is the same as the receiving terminal, uploaded bythe sending terminal A, which is allowed to receive the picture aaa,both of which are bbb. Thus, the picture aaa is sent to the receivingterminal 1. With respect to the receiving terminal 2 and the receivingterminal 3, as the matching results are that the user identification ofthe receiving terminal sent by the receiving terminal 2 and thereceiving terminal 3 respectively is not the same as the receivingterminal, uploaded by the sending terminal A, which is allowed toreceive the picture aaa, the server C rejects to send the picture aaa tothe receiving terminal 2 and the receiving terminal 3. When the server Crejects to send the picture aaa to the receiving terminal 2 and thereceiving terminal 3, a notice including content such as “wrong useridentification of user terminal, cannot download the picture aaa” may besent to the receiving terminal 2 and the receiving terminal 3.

In addition to the above method that designates the user identificationof the receiving terminal that is allowed to receive data to ensure theprivacy of data transmission, according to another example, the data maybe encrypted based on the designated user identification of thereceiving terminal so that the designated receiving terminal may use thedata to ensure the privacy of data transmission.

For example, when the sending terminal A only intends to send thepicture to the receiving terminal 1, assuming that the useridentification of the receiving terminal 1 is bbb, the sending terminalA firstly generates the data identification xyz corresponding to thepicture aaa, uses the user identification bbb of the receiving terminal1 to encrypt the picture aaa, and then sends the encrypted picture aaaand the data identification xyz corresponding to the picture aaa to theserver C.

When the receiving terminal 1 receives the data identification xyz sentby the sending terminal through Bluetooth broadcast, the receivingterminal 1 may automatically send the data identification to the serverC. After receiving the data identification xyz sent by the sendingterminal A, the server C, according to the corresponding relationshipbetween the data identification xyz and the picture aaa, searches forthe encrypted picture aaa, and sends the found encrypted picture aaa tothe receiving terminal 1. At the meantime, the server C may also send aprompt message to the receiving terminal 1 to remind the user of thereceiving terminal 1 to encrypt the picture aaa by using the useridentification of the receiving terminal so that the user of thereceiving terminal 1 successfully decrypts the picture aaa. The otherreceiving terminals obtain the picture aaa from the server C afterreceiving the data identification xyz. As the user identifications ofthe other receiving terminals may not be used to decrypt the pictureaaa, even though the other users obtain the picture aaa from the serverC according to the data identification xyz, they cannot use the useridentifications of the other receiving terminals to decrypt the pictureaaa, thereby ensuring the privacy of data transmission.

In addition to encryption, some other methods such as limiting a numberof times that the data is downloaded from the server or pre-determiningan expiration time of the data stored in the server may be used toensure the privacy of data transmission.

To clearly describe a data transmission relationship between a sendingterminal, a receiving terminal, and a server, the following descriptionsare described by reference to FIG. 5.

FIG. 5 is a flow chart illustrating an example detailed datatransmission method according to an example embodiment of the presentdisclosure.

At 502, a sending terminal 504 uploads data and a data identificationcorresponding to the data to a server 506.

At 508, the sending terminal 504 broadcasts the data identification to areceiving terminal 510 through a short distance wireless communicationincluding a short distance wireless communication protocol.

At 512, the receiving terminal 510 sends the data identification to theserver 506.

At 514, the server 506 sends the data corresponding to the dataidentifier to the receiving terminal 510.

The above is an example data transmission method according to thepresent disclosure. Based on the same techniques, the present disclosurealso provides an example data transmission system and corresponding datatransmission apparatus, as shown from FIG. 6 to FIG. 9.

FIG. 6 is a diagram illustrating an example data transmission systemaccording to an example embodiment of the present disclosure. Theexample system may include a sending terminal 602, one or more receivingterminals 604(1), 604(2), . . . 604(n) (n may be any integer), and aserver 606.

The sending terminal 602 uploads data and a data identificationcorresponding to the data to the server 606 and broadcasts the dataidentification to the receiving terminals 604 through a short distancewireless communication including a short distance communicationprotocol.

A receiving terminal such as a respective receiving terminal 604(1)receives the data identification broadcasted by the sending terminal602, sends the data identification to the server 606, and receives thedata corresponding to the data identification returned by the server606.

The server 606 receives the data and the corresponding dataidentification uploaded by the sending terminal 602, receives the dataidentification sent by the respective receiving terminal 604(1), andsends the data corresponding to the data identification to therespective receiving terminal 604(1).

For example, the short distance wireless communication may includeBluetooth.

For example, the sending terminal 602 may further obtain the useridentification of the sending terminal 602 and upload the useridentification of the sending terminal as the data to the server 606.The respective receiving terminal 604(1) may further obtain the userinformation corresponding to the user identification of the sendingterminal 602 according to the user identification of the sendingterminal 602 when the received data is the user identification of thesending terminal 602.

For example, the sending terminal 602 may further upload the data, thedata identification corresponding to the data, and a user identificationof a receiving terminal that is allowed to receive the data to theserver 606. The respective receiving terminal 604(1) may further obtainsthe user identification of the respective receiving terminal 604(1) andsend the data identification and the user identification of therespective receiving terminal 604(1) to the server 606. The server 606may further receive the data, the data identification corresponding tothe data, and the user identification of a receiving terminal that isallowed to receive the data from the sending terminal 602. The server606 also receives the user identification of the respective receivingterminal 604(1). When the user identification of the respectivereceiving terminal 604(1) is the same as the user identification of areceiving terminal, uploaded by the sending terminal 602, which isallowed to receive the data, the server 606 sends the data correspondingto the data identification to the respective receiving terminal 604(1).

For example, a number of the receiving terminals is at least one.

FIG. 7 is a diagram illustrating an example sending terminal 700 fordata transmission according to an example embodiment of the presentdisclosure.

The sending terminal 700 may include one or more processor(s) or dataprocessing unit(s) 702 and memory 704. The sending terminal 700 mayfurther include one or more input/output interfaces and one or morenetwork interfaces (not shown in FIG. 7).

The memory 704 is an example of computer-readable media. The memory 704may store therein a plurality of modules or units including an uploadingmodule 706 and a broadcasting module 708. The uploading module 706transmits data and a data identification corresponding to the data to aserver. The broadcasting module 708 broadcasts the data identificationto one or more receiving terminals through a short distance wirelesscommunication including a short distance communication protocol.

For example, the short distance wireless communication may includeBluetooth.

For example, the uploading module 706 may further obtain the useridentification of the sending terminal and upload the useridentification of the sending terminal as the data to the server.

For example, the uploading module 706 may further upload the data, thedata identification corresponding to the data, a user identification ofa receiving terminal that is allowed to receive the data to the server.

For example, a number of the receiving terminals is at least one.

FIG. 8 is a diagram illustrating an example receiving terminal 800 fordata transmission according to an example embodiment of the presentdisclosure.

The receiving terminal 800 may include one or more processor(s) or dataprocessing unit(s) 802 and memory 804. The receiving terminal 800 mayfurther include one or more input/output interfaces and one or morenetwork interfaces (not shown in FIG. 8).

The memory 804 is an example of computer-readable media. The memory 804may store therein a plurality of modules or units including a firstreceiving module 806, a sending module 808, and a second receivingmodule 810. The first receiving module 806 receives a dataidentification broadcasted by a sending terminal through a shortdistance wireless communication including a short distance communicationprotocol. The sending module 808 sends the data identification to theserver. The second receiving module 810 receives data corresponding tothe data identification returned by the server.

For example, the short distance wireless communication may includeBluetooth.

For example, the memory 804 may further store therein a user informationretrieving module 812 that retrieves user information corresponding tothe user identification of the sending terminal according to the useridentification of the sending terminal when the received data is theuser identification of the sending terminal.

For example, the user information retrieving module 812 may furtherobtain a user identification of the receiving module 800 and send thedata identification and user identification of the receiving module tothe server. The second receiving module 810 receives the datacorresponding to the data identification returned by the server afterthe server authenticates the user identification of the receivingterminal.

FIG. 9 is a diagram illustrating an example server 900 for datatransmission according to an example embodiment of the presentdisclosure.

The server 900 may include one or more processor(s) or data processingunit(s) 902 and memory 904. The server 900 may further include one ormore input/output interfaces and one or more network interfaces (notshown in FIG. 9).

The memory 904 is an example of computer-readable media. The memory 904may store therein a plurality of modules or units including a firstreceiving module 906, a second receiving module 908, and a sendingmodule 910. The first receiving module 906 receives data and a dataidentification corresponding to the data uploaded by a sending terminal.The second receiving module 908 receives the data identification sent bya receiving terminal. The sending terminal broadcasts the dataidentification to one or more receiving terminals through a shortdistance wireless communication including a short distance communicationprotocol. The sending module 910 sends the data corresponding to thedata identification to the receiving terminal.

For example, the first receiving module 906 may further receive a useridentification of the sending terminal uploaded by the sending terminal.

For example, the first sending module 906 may further receive from thesending terminal the data, the data identification corresponding to thedata, a user identification of a receiving terminal that is allowed toreceive the data. The second receiving module 908 may further receivefrom the receiving terminal the data identification and the useridentification of the receiving terminal. The sending module 910 mayfurther send the data corresponding to the data identification to thereceiving terminal when the user identification of the receivingterminal is the same as the user identification of the receivingterminal, uploaded by the sending terminal, which is allowed to receivethe data.

For example, a number of the receiving terminals is at least one.

In a standard configuration, a computing device, such as the sendingterminal, the receiving terminal, or the server, as described in thepresent disclosure may include one or more central processing units(CPU), one or more input/output interfaces, one or more networkinterfaces, and memory.

The memory may include forms such as non-permanent memory, random accessmemory (RAM), and/or non-volatile memory such as read only memory (ROM)and flash random access memory (flash RAM) in the computer-readablemedia. The memory is an example of computer-readable media.

The computer-readable media includes permanent and non-permanent,movable and non-movable media that may use any methods or techniques toimplement information storage. The information may be computer-readableinstructions, data structure, software modules, or any data. The exampleof computer storage media may include, but is not limited to,phase-change memory (PCM), static random access memory (SRAM), dynamicrandom access memory (DRAM), other type RAM, ROM, electrically erasableprogrammable read only memory (EEPROM), flash memory, internal memory,CD-ROM, DVD, optical memory, magnetic tape, magnetic disk, any othermagnetic storage device, or any other non-communication media that maystore information accessible by the computing device. As defined herein,the computer-readable media does not include transitory media such as amodulated data signal and a carrier wave.

It should be noted that the term “including,” “comprising,” or anyvariation thereof refers to non-exclusive inclusion so that a process,method, product, or device that includes a plurality of elements doesnot only include the plurality of elements but also any other elementthat is not expressly listed, or any element that is essential orinherent for such process, method, product, or device. Without morerestriction, the elements defined by the phrase “including a . . . ”does not exclude that the process, method, product, or device includesanother same element in addition to the elements.

One of ordinary skill in the art would understand that the exampleembodiments may be presented in the form of a method, a system, or acomputer software product. Thus, the techniques of the presentdisclosure may be implemented by hardware, computer software, or acombination thereof. In addition, the techniques of the presentdisclosure may be implemented as the computer software product that isin the form of one or more computer storage media (including, but is notlimited to, disk, CD-ROM, or optical storage device) that includecomputer-executable or computer-readable instructions.

The above description describes the example embodiments of the presentdisclosure, which should not be used to limit the present disclosure.One of ordinary skill in the art may make any revisions or variations tothe present techniques. Any change, equivalent replacement, orimprovement without departing the spirit and scope of the techniques ofthe present disclosure shall still fall under the scope of the claims ofthe present disclosure.

What is claimed is:
 1. A method comprising: sending, by a sendingterminal, data and a data identification corresponding to the data to aserver; and broadcasting the data identification to one or morereceiving terminals through a short distance wireless communicationprotocol, wherein the data identification is generated based on multipleparameters including at least a short distance communication methodidentification of the short distance wireless communication, a randomnumber, and a time length from a previous particular time to a currenttime.
 2. The method of claim 1, wherein sending the data and the dataidentification to the server enables a respective receiving terminal toobtain the data from the server according to the data identification. 3.The method of claim 1, wherein the short distance wireless communicationprotocol includes Bluetooth communication protocol, Infraredcommunication protocol, or Zigbee communication protocol.
 4. The methodof claim 1, further comprising sending user identification of thesending terminal to the server.
 5. The method of claim 1, furthercomprising sending a user identification of a receiving terminal that isallowed to receive the data to the server.
 6. The method of claim 1,wherein the data identification is broadcasted to one or more receivingterminals at a preset frequency within a preset time period.
 7. A methodcomprising: receiving, by a receiving terminal, a data identificationbroadcasted by a sending terminal through a short distance wirelesscommunication protocol; sending the data identification to a server; andreceiving data returned from the server that corresponds to the dataidentification, wherein the data identification is generated based onmultiple parameters including at least a short distance communicationmethod identification of the short distance wireless communication, arandom number, and a time length from a previous particular time to acurrent time.
 8. The method of claim 7, wherein the short distancewireless communication protocol includes Bluetooth communicationprotocol, Infrared communication protocol, or Zigbee communicationprotocol.
 9. The method of claim 7, further comprising: determining thatthe data is a user identification of the sending terminal; and obtaininguser information corresponding to the user identification of the sendingterminal according to the user identification of the sending terminal.10. The method of claim 9, wherein obtaining the user informationcorresponding to the user identification of the sending terminalaccording to the user identification of the sending terminal comprisesobtaining the user information corresponding to the user identificationof the sending terminal from the server or a third party deviceaccording to the user identification of the sending terminal.
 11. Themethod of claim 7, further comprising sending a user identification ofthe receiving terminal to the server.
 12. The method of claim 11,wherein receiving the data returned from the server that corresponds tothe data identification comprises receiving the data returned from theserver that corresponds to the data identification after the useridentification of the receiving terminal is determined to be a useridentification of a receiving terminal that is allowed to receive thedata.
 13. A method comprising: receiving, by a server, data and a dataidentification corresponding to the data from a sending terminal;receiving the data identification from a particular receiving terminal;and sending the data to the receiving terminal, wherein the dataidentification is generated based on multiple parameters including atleast a short distance communication method identification of the shortdistance wireless communication, a random number, and a time length froma previous particular time to a current time.
 14. The method of claim13, wherein the data identification is broadcasted by the sendingterminal to the receiving terminal through the short distance wirelesscommunication protocol.
 15. The method of claim 13, wherein the shortdistance wireless communication protocol includes Bluetoothcommunication protocol, Infrared communication protocol, or Zigbeecommunication protocol.
 16. The method of claim 13, further comprisingreceiving a user identification of the sending terminal from the sendingterminal.
 17. The method of claim 13, further comprising receivingrespective one or more user identifications of one or more receivingterminals that are allowed to receive the data from the sendingterminal.
 18. The method of claim 17, further comprising receiving auser identification of the particular receiving terminal from theparticular receiving terminal.
 19. The method of claim 18, whereinsending the data to the particular receiving terminal comprises sendingthe data to the particular receiving terminal in response to determiningthat the user identification of the particular receiving terminal, issame as a user identification of the respective one or more useridentifications.
 20. The method of claim 13, wherein the dataidentification is generated further based on a unique deviceidentification of the sending terminal.